talus noun¹. ['teɪlǝs] Pl. tali ['teɪlʌɪ]. L16.
[Latin.]
Anatomy. A small bone in the foot, articulating with the tibia to form the ankle joint. Also called ankle-bone, astragalus.

[TahlilGaran] English Dictionary ▲

talus noun². ['teɪlǝs] Pl. -uses. M17.
[French, of unkn. origin.]
1. A slope; spec. (Fortification) the sloping side of a wall or earthwork. M17.

2. Geology. A scree slope, consisting of material which has fallen from the face of the cliff above. M19.
b. gen. The slope of a mountain, hill, or iceberg. Now rare. M19.

Comb.:
talus cone a cone-shaped mass of detritus in a cave etc., consisting of material which has fallen from (a hole in) the roof.

[TahlilGaran] English Dictionary ▲